Veterinary dose gun



Aug. 22, 1939. E. A. sTRlcKLEN VETERINARY DosE GUN Filed July 20, 1937Patented Aug. 22, 1939 UNITED STATS* A'ENT QFFICE Application July 20,

2 Claims.

This invention. relates to a medicine injector primarily for use byveterinarians for introducing remedies, such as for examplecarbontetrachloride, into the throats of animals particularly sheep and goatsto insure the reception thereof into the stomach of the animal for theprevention or treatment of stomach Worms.

An object ci the invention is to provide a device of this characterwhich will have a certain amount of flexibility enabling the operator toinsert it far enough into the animals throat to prevent strangling orchoking when the medicine is being discharged into the stomach of theanimal.

The invention together with its objects and advantages will be bestunderstood from a studyV of the following description taken inconnection with the accompanying drawing wherein:

Figure 1 is a side elevational View of the device, and

Figure 2 is an, enlarged. detail sectional view taken substantially onthe line 2--2 of Figure 1.

Referring to the drawing by reference numerals it will be seen that inthe preferred embodiment thereof the medicine injector or dose guncomprises an elongated cylindrical nozzle 5 having at one end a wallprovided with a single perforation. 6. At the opposite end. thereof thenozzle 5 is open and externally threaded as at 1 to permit one end of acap 8 to be screwed onto said end of the nozzle 5. Y

Further the invention comprises an, elongated ilexible tube 9 one end ofwhich is fitted snugly within an end of the cap 8 and which is` suitablysecured to said cap. At the free end thereof the tube 9 is equipped witha pair of nger accommodating rings I0.

Mounted for reciprocation within the cylindrical nozzle 5 is a piston IIofthe leather cup type as shown. Piston II is suitably secured to oneend of a flexible piston rod I2 that works through the tube 9 and at itsouter free end is provided with a. ring I3 complementa] to the rings I0.

When it is desired to introduce a remedial agent, as for example, carbontetrachloride, into the throat of an animal, the piston or plunger I Iwill be substantially in the position shown in Figure 2. The free end ofthe nozzle 5 will be inserted in the liquid, as for example, carbontetrachloride, and the piston Il will have a reciprocatory motio-nimparted to it away from the perforated end 6 of the nozzle so that thenozzle 5 may be partially filled with the liquid. To force the liquidthrough the perforation 6 and down the throat of the animal into thestomach the piston I I will be caused to move toward the perforated end6 of the nozzle forcing the liquid under pressure through theperforation 6 in the nozzle.

1937, Serial No. 154,667

In actual practice it will be found to advantage to have, as taught bythis invention, the tube 9 and piston rod or stem I2 flexible as suchwill permit the operator to insert the instrument far enough into theanimals throat to prevent strangling or choking when the medicine isdischarged and also will obviate the use of any instruments for holdingthe animals mouth open.

Also to maintain the instrument well oiled and in Working condition, oilmay be placed in the nozzle 5 behind the piston or plunger I I, it beingobvious that but a small amount of oil need be used so that there willbe no danger of any material escape of the oil through the tube 9.

Having thus described the invention what is claimed as new is:

l. A veterinary instrument comprising a tubular nozzle having one endfully open and the other end provided with an end wall having roundededges and provided with a centrally arranged opening, a. cap threaded onthe open end of the nozzle and having a bore extending from end toendthereof, a flexible tube having one end secured in the bore of the capand of a length to permit insertion of the nozzle into a throat of ananimal to assume a position adjacent the stomach of the animal, fingerrings carried by the free end of the tube, a piston slidable in thenozzle and including oppositely disposed cups to contact the walls ofthe nozzle whereby medicine in the nozzle between the piston and theopening of the end Wall may be discharged from said nozzle and lubricantarranged in the nozzle between the piston and tube will be preventedfrom passing the piston to the opening of said nozzle, and a exible stemsecured on the piston and extending through the bore and tube, and athumb ring secured to the free end of the stem.

2. A veterinary instrument comprising a tubular nozzle having each end`open, a cap removably secured on one of the ends of said nozzle andhaving a bore extending from end to end thereof, a exible tube havingone end secured in the bore of the cap and of a length to permitinsertion of the nozzle into a throat of an animal to assume a positionadjacent the stomach of the animal, a piston slidable in the nozzle andincluding oppositely disposed cups to contact walls of the nozzlewhereby medicine in the nozzle between` the piston and the open, end` oisaid nozzle may be discharged from the nozzle and lubricant arranged inthe nozzle between the piston and the tube will be-prevented frompassing the piston to the open end of said nozzle, a flexiblestem'secured on the piston and extending through the bore of the cap andthe tube, and an operating means for said stem and tube.

ELZA A. STRICKLEN.

